Currently, Trinity sets up a 4-core virtual CPU, 4 GB memory, 64 GB storage and 1920x1080 display. These configurations conform to that tested in our paper. However, for the guest apps, we mask ourselves as Samsung Galaxy S20 Ultra 5G (a high-end Android device) in terms of CPU, GPU, and vendor information so as to unlock certain app features reserved for high-end mobile phones only (e.g., high-quality graphics).

1. To establish an ADB connection with Trinity, make sure Trinity's WiFi has been turned on and connected first.

   

2. In a terminal, type adb connect 127.0.0.1:5555. Of course, you need an adb in your PATH, see here.

3. If prompt: connected to 127.0.0.1:5555, you are connected. Else, retry step 2.

1. If you haven't installed Trinity on disk following the guide, you can change the resolution as follows.

• Upon entering the grub, press the $Tab$ key as instructed on the grub UI.

  

• You can see the video configuration "video=1920x1080" in the boot parameters.

  

• Change it to any resolution you want. For example, you can change it to a vertical 9:16 resolution as follows:

  

2. If you already install Triniy on disk, you can change the resolution in the same way as VMware Workstation following the guide here.

1. For normal shutdown, click the upper-right close button. And then click the Power off button here.

   

2. If Trinity unfortunately freezes, you can quickly click the close button several times to force a shutdown. Freezing has been observed on certain machines during their first boot of Trinity without the installation of the Guest OS. A shutdown and reboot can solve this. We have located the bug behind this and are working to fix it.

If you find that even a reboot cannot resolve some of the issues, particularly after you have installed the guest OS images, you can try the last resort that almost guarantees to solve any problems---erase the disk and start over. To this end, start a terminal and cd to the directory of your hda.img file, and type .\x86_64-softmmu\qemu-img create -f qcow2 hda.img 64G. A fresh start!